<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        div {
            width: 400px;
            height: 400px;
        }
    </style>
</head>

<body>
    <div id="dv"></div>

    <script>
        var dv = document.getElementById('dv')
        dv.addEventListener('touchstart',function(e){
            var touch = e.changedTouches.item(0);
            e.preventDefault();
            console.log(e)
            // e.srcElement.style.backgroundColor = 'pink'
            // e.srcElement.style.width  = touch.radiusX * 2 + 'px';
            // e.srcElement.style.height = touch.radiusY *2 + 'px';
            // e.srcElement.style.transform = 'rotate(' + touch.rotationAngle + 'deg)'
        });
    
    </script>
</body>

</html>